The head and neck metastases from clear cell carcinoma of the kidney

The kidney carcinoma is the commonest tumor to metastasize to the head and neck. The majority of renal metastases occur in the nose and paranasal sinuses. This paper presents 4 cases of metastatic tumor in the nasal cavities, paranasal sinuses, frontal bone and piriform fossa. The difficulties in diagnosis and management was also presented. (author)